{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T12:12:03Z","timestamp":1746619923855},"reference-count":0,"publisher":"IMR Press","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["International Journal for Vitamin and Nutrition Research"],"published-print":{"date-parts":[[2011,7,1]]},"abstract":"<jats:p> Purpose: It has previously been shown that there is a threshold of serum 25-hydroxy vitamin D below which secondary hyperparathyroidism may occur. Our purpose was to estimate this threshold in a population of migrant African women living in Paris.Methods: Between February 2008 and December 2009, measurements of 25-hydroxy vitamin D and parathormone were performed in 165 African migrant women living in Paris. The estimation of 25-hydroxy vitamin D and parathormone marginal distributions as Gaussian mixtures, combined with a nonparametric kernel estimation method of the regression function of parathormone on 25-hydroxy vitamin D, provided the desired estimate of serum 25-hydroxy vitamin D threshold.Results: In our sample of African women, our method has shown that serum 25-hydroxy vitamin D levels below 48 \u00b1 2 nmol\/L may induce an increase in parathormone concentrations.Conclusion: In this sample, our method provided a reliable estimate (95 % confidence interval) of the serum 25-hydroxy vitamin D level below which an increase in parathormone concentrations can be observed. <\/jats:p>","DOI":"10.1024\/0300-9831\/a000073","type":"journal-article","created":{"date-parts":[[2013,2,2]],"date-time":"2013-02-02T02:22:31Z","timestamp":1359771751000},"page":"218-224","source":"Crossref","is-referenced-by-count":10,"title":["Estimation of the 25(OH) Vitamin D Threshold below which Secondary Hyperparathyroidism may Occur Among African Migrant Women in Paris"],"prefix":"10.31083","volume":"81","author":[{"given":"Ernest","family":"Emilion","sequence":"first","affiliation":[{"name":"Community Clinic, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard","family":"Emilion","sequence":"additional","affiliation":[{"name":"MAPMO Laboratory, Orleans University, Orleans, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"16242","container-title":["International Journal for Vitamin and Nutrition Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/econtent.hogrefe.com\/doi\/pdf\/10.1024\/0300-9831\/a000073","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,8,9]],"date-time":"2024-08-09T02:10:22Z","timestamp":1723169422000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.imrpress.com\/journal\/IJVNR\/81\/4\/10.1024\/0300-9831\/a000073"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,7,1]]},"references-count":0,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2011,7,1]]}},"alternative-id":["10.1024\/0300-9831\/a000073"],"URL":"https:\/\/doi.org\/10.1024\/0300-9831\/a000073","relation":{},"ISSN":["0300-9831","1664-2821"],"issn-type":[{"type":"print","value":"0300-9831"},{"type":"electronic","value":"1664-2821"}],"subject":[],"published":{"date-parts":[[2011,7,1]]}}}